CHARACTERISTICS OF THE STRAIN Lactobacillus plantarum UL487 ISOLATED FROM TOFU (HUE)
Abstract
Lactobacillus plantarum is widely used in many fields, especially in medicine. In this study, besides the
strain’s morphology (i.e, the colony and the cell under microscrope and scan electronic microscope), antibacterial activities against some pathogenic bacteria and the nucleotide sequences encoded for bacteriocin PlnA, PlnEF and the cold shock protein (Csp) of L. plantarum UL487 isolated form Tofu (Hue) were studied
by agar diffusion method and cloning. The results showed that: i) the morphology of the colony and the cell of the strain were typical for lactic acid bacteria; ii) UL487 owned antibacterial activities against some pathogenic bacteria such as Staphylococcus aureus VTCCB 658, Bacillus cereus VTCCB 613 and Salmonella enterica VTCCB 480; and iii) the nucleotide sequences encoded for bacteriocin PlnA, PlnEF and the amino acid of the cold shock protein (Csp) of the strain were 96%, 99% and 94% identical to those of the L. plantarum in the Gen Bank, respectively.
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